Belt-polishing machine.



E. F. THOREN.

BELT POLISHING MACHINE.

APPLlCATION FILED FEB. 15. 1912.

Patented May 11, 1915.

THE Ntmms PETERS 60., PHOTC-LI'THQ, WASHINGTON, D. c,

lllNllTlllD TATE PANT @FQE ERNST FRIDOLF THOREN, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF '10 EMIL E. LAUN, OF CLAYTON, MIS$OURL BELT-POLISHING MACHINE.

Specification of Letters Patent.

Patented May 11, 1915.

Original application filed August 4, 1911, Serial No. 642,399. Divided and this application filed February 15, 1912. Serial No. 677,735.

To all whom it may concern Be it known that I, ERNST FRIDOLF THOREN, a subject of the King of Sweden,

residing in the city of St. Louis and State of Missouri, have invented a certain new and useful Improvement in Belt-Polishing Machines, of which the following is a specification.

This invention relates to belt polishing machines whereby the edges of belts, straps and the like have imparted to them a finishing operation for improving their general qualities of appearance and serviceabihty.

More especially, the present invention contemplates an improved construction, combination and arrangement of parts in the bufier head, and the cooperative disposition of a pair of buffer heads constructed in the manner set forth in the specification.

One of the objects of the present invention is to provide an improved adjustable buffer head whereby the finishing operation can be carried out upon belts of different thicknesses, the subject matter of this application having originally formed a portion of a co-pending application, Serial No. M2399, filed by me on August 4c, 1911. Toward the attainment of this object, my invention contemplates the provision of a pair of relatively adjustable disks for mounting a buliing strip, and improved means for releasably clamping said strip to the disks.

Other and further objects will appear in the specification and be specifically pointed out in the appended claims, refer-- ones being had to the accompanying drawings exemplifying the invention, and in which,

Figure 1 is a fragmentary front elevation of a machine constructed in accordance with the principles of the present invention. Fig. 2 is a section on the line 11-11, Fig. 1, parts being shown in elevation.

According to the embodiment shown on the drawings, and referred to more completely in the co-pending application mentioned above, an apron or bed plate 1 is rigidly secured to a table of which only the top board 2 and the side board 3 are engaged. A pair of arbors 4: which carry the buffer heads, to be hereinafter specifically described, are mounted in bearings in any suitable manner to make said arbors adjustable vertically and laterally relative to each other for adapting them to their work.

The upper end 5 of each arbor 41 is reduced to form a shoulder 6 upon which a hub 7 of a lower disk 8 rests; said disk being held against relative rotation by means of a pin 9 which projects into a recess 10 in the bottom face of said hub. The hub 7 is provided with an extension 11 to adapt it to be clamped to the arbor by means of a threaded cap 12 which is screwed to the upper end of the arbor. The upper extremity of the extension 11 is threaded exteriorly for the reception of a nut 13, which impinges the forwardly projecting portion 14 of the upper disk 15, the hub of said upper disk being reciprocable along the inverted portion of the extension 11 under the action of a compression spring 16, which tends to force said disks asunder. It will be seen, therefore, that the nut 13 serves to hold the disks 8 and 15 in any relative positions to which they may be adjusted. The lower face of the disk 8 and the upper face of the vdisk 15 is provided with an annular groove or recess 17 for the reception of the lateral edges of a buffing strip 18 of any suitable material, said lateral edges being clamped in position by rings or washers 19, which are held in position by clamping nuts 20, which are threaded, respectively, to the hub portions 7 and 14. By means of this arrangement, the bufiing strip 18 can be mounted to form a peripheral groove 21 of adjustable depth and thickness to meet the requirements of the articles to be polished. If desired, a support or standard 22 may be provided intermediate of the adjacently disposed buffer heads to slidably support a belt or strap 23 as it is drawn between the buffing heads.

What I claim is:

1. In a polishing wheel, the combination with a rotary spindle, of a disk keyed thereto, a hub formed on said disk, a resilient member mounted on said disk over said hub, a second disk mounted on said hub and adapted to engage said resilient member, said resilient member forming means for spacing said disks apart, locking means cooperable with said resilient member, and hurling material secured to the peripheries of said disks, said resilient member and said locking means forming means for controlling the distances said disks are spaced apart.

2. In a device of the character described, the combination with a rotary spindle, of a disk keyed thereto, a second disk spaced therefrom. and adjustable axially with re spect thereto, resilient means for separating said disks, means for holding said disks against separation, and a bufl ing strip having its lateral edges secured respectively about the peripheries of said disks; said strip being bulged into the space between said disks to form a groove.

3. In a device of the character described, thecombination with a rotary spindle, of a disk provided with a hub portion keyed to said spindle, and having an elongated bearing sleeve, a second disk slidable along said sleeve, a resilient member interposed between said disks to impart a separating tendency, means for locking said disks at any desired distance apart, and a bufling strip secured to the peripheries of said disks.

4. In a device of the character described, the combination with a rotary spindle, of a removable buffer head comprising a disk member provided with a sleeve, a second disk adjustable along said sleeve and spaced apart from said first mentioned disk, and a bufling strip carried by said disks and sagging therebetween to form a buffing groove.

5. In a belt polishing wheel, the combination of relatively movable disks spaced apart, with resilient means for separating said disks, a hub formed on one of said disks,

the other of said disks being mounted on said hub, and bufling material carried by said disks and gathered therebetween to form a groove.

6. In a polishing wheel, the combination with a rotary spindle, of a disk keyed thereto, a resilient member mounted on said disk, a second disk mounted on said resilient memher, said resilient member forming means for spacing said disks apart, locking means cooperable with said resilient member, and buffing material secured to the peripheries of said disks, said resilient member and said locking means forming means for controlling the distances said disks. are spaced apart.

7. In a polishing wheel, the combination of a pair of disks, one of said disks being mounted on the hub of the other of said disks, said disk hub being keyed to a rotary spindle, resilient means located between said disks to impart a separating tendency there to, means cooperable with said resilient means for limiting the separating tendency of said disks, butting material carried by said disks and gathered therebetween so as to form a bufling groove. a

8. In a device of the character described,

the combination with relatively movable disks spaced apart, a hub formed on one of said disks, one of said disks being mounted on said hub, of buffing material carried by said disks and gathered'therebetween to form a groove.

9. In a device of the character described,

the combination with relatively movable disks spaced apart, a-hub formed on one of said disks, one of said disks being-mounted on said hub, said disks being held apart by a resilient member, of a lock nut located against one of said disks to operate against said resilient member, buffing material mounted on said disks, the spacing apart of said'disks forming meansfor allowing said buffing material to sag between said disks to form a bufling groove, said buffing material being mounted on the peripheries of said disks, said locking nut and resilient member forming means for increasing or decreasing the width of said bufling groove.

10. In a device of the character described, a

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01 iatents,

Washington, D. 0. 1 

